R Legend

The bottle neck at either end?

I will be running a Toda header with a 63 mm collector & a berk 63mm HFC. I'm currently using a Spugen 63mm exhaust so everything will be great for now.

I was thinking about upgrading to the Greddy SE Dual but I would hate to have the 63mm HFC feed directly into the 70mm exhaust.

Anyone make a HFC with a 63mm inlet and 70mm out?
No test pipe recommendations please!

N-ATuned

Here you go dude.

http://www.berktechnology.com/shop/product...ID=100&P_ID=425

I have one sitting in my room right now. I'm going to be running same exhaust, but still waiting to get good headers.

Hope this helps!

R Legend

I know they have both sizes, but then its a bottle neck @ the collector going from 63mm - 70mm

slowd16

it would only be a bottle neck it you had a 70mm header collector and 63mm HFC.

R Legend

Yeah, I know its technically not a bottle neck but the flow between the two will create turbulance. I'm looking for the smoothest transition possible. I'm thinking of just having my Berk HFC cut and flared at the exhaust side.

kevos2k

http://vibrantperformance.com/catalog/prod...roducts_id=1078

this is what i used from my header ~2.5" into my 3" exhaust... not sure if someone makes em in the 60-70mm sizes tho

herminator

why not just take your existing HFC to an exhaust shop and have them cut and weld on whatever size outlet you want?

20-30 bucks for that is much better than the 200+ for a new HFC.

R Legend

prob what I'll end up doing